Pure honey, salt, sugar, and sorghum molasses can be kept indefinitely as long as they are kept free from moisture. (Make sure that your honey does not contain additives. Sometimes water or sugar are added to honey. Pure honey will crystallize when stored for a long time. Impure honey will not.)

Garden seeds or sprouting seeds will remain viable for 23 years (The exception is alfalfa, which will keep for at least 8 years.)